New install of Post Indexer throwing Fatal Error: Call to undefined function get_blog_status()

Hi

I am running WP 3.1.2 ( not Multisite) and BP 1.2.8 - alpha site in development is http://www.irrilium.com/SecretPlan

I want to use the Global Post Search plugin to replace the less than thorough standard BP search function. Having activated the Post Indexer Plugin I get an error if I try to make a new post or update an old post.

Error is noted below

Fatal error: Call to undefined function get_blog_status() in /home8/irrilium/public_html/SecretPlan/wp-content/plugins/post-indexer/post-indexer.php on line 225

I note the comment on Global table being installed but this does not look like a db issue - can you point me in the right direction

Thank you for your help

Steve

ADDED

OK- it's only Multisite, I get it.

I need a better search method than the standard WP-BP methods so I though my prayers were answered. : (